Clamp



W. D. FERGUSON.

CLAMP. APPLICATION FILED MAR. 22.19l9- 1,331,491 Patented Feb. 24,1920.

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UNITED STATES PATENT OFFICE.

WILLIAM D. FERGUSON, OF SAN ANTONIO, TEXAS.

Application filed March 22, 1919.

To all whom it may concern:

lie it known that I, WILLIAM I). FERGU- sox, a citizen of the United States, residing at San Antonio, in the county of Bexar and State of Texas, have invented a new and useful Clamp, of which the following is a specification.

This invention relates to clamps for use in concrete building construction and has for its object the provision of a clamp that will retain the form for concrete work in shape until the concrete has set, or hardened, and which may then be easily and quickly removed.

Another object is to provide a device that may be used repeatedly on one job after another and that renders unnecessary, any frame work, or bracin such as was heretofore used to hold the side walls of the form in place.

With these and other objects in view as will appear, as the description proceeds, the invention resides in the novel features shown in the drawing and more particularly pointed out in the appended claim.

In the drawing:

Figure 1 is a view in cross section of a form with the invention applied thereto;

Fig. 2 is a perspective view of the clamp.

Referring to the drawing by characters of reference the numerals 1 and 2 represent the opposite side walls and 3 the bottom of a form commonly used in the building of concrete structures.

It has heretofore been the practice to build quite an expensive frame work to support the form for concrete work, much of the lumber of which was useless afterward, with my invention this loss is eliminated and much of the workmens time is saved in setting up the forms.

The device consists of a bar 4 rectangular in cross section and of a length adaptable to forms of various widths. Secured to the bar intermediate its ends and at right angles thereto, is an angle iron standard 5, a brace member 6 is riveted to the bar 4 near one end thereof and extends diagonally to engage the standard near the top thereof Where it is riveted to one of the sides of the angle member.

The standard is provided with openings in the side adjacent the form for the reception of nail or other fastening devices, for hold- Specification of Letters Patent.

CLAMP.

Patented Feb. 24, 1920.

Serial No. 284.238.

ing the boards of the form in place, until the concrete is poured.

Slidably mounted on the bar is an abutment 7 for engaging that side of the form opposite the one engaged by the standard 5. The abutment 7 is provided with a rectangular opening 8, which is adapted to approximately fit the bar i, the opening being slightly longer than the corresponding cross sectional dimension of the bar, thereby permitting a slight tilting of the abutment on the bar, to cause the abutment to grip the bar; this being an old and well known means of engagement, further description is deemed unnecessary.

The abutment is provided at the upper end thereof with an inwardly bent end 9, presenting a face 10 to engage the form, well up the side wall thereof; the relatively long arm and small bearing face of the abutment renders the adjustment of the clamp to the form comparatively easy when the abutment is forced forward on the bar, which is done by driving the abutment on the bar.

A rivet or pin 11 on the bar 4 prevents the complete removal of the abutment from the bar. The few parts constituting the device form a substantial structure that is well adapted for the rough usage to which a device of this character is subjected, and although primarily intended for use in concrete work, other uses for the device will present themselves.

Having thus described my invention what is claimed is:

A clamp for a concrete form, comprising a base bar of rectangular cross section; a standard in the form of an angle member. one flange of which is secured to one side of the base bar, the other flange of which outstands from said side of the base bar and is provided with openings facilitating the attachment of the clamp to one side of a form 'an inclined brace having its ends attached respectively to the first specified flange of the standard and to the base bar; and an abutment having an opening receiving the base bar slid-ably and conforming in shape to the cross section of the base bar, the abutment being tiltable to grip the bar, the abutment having an inwardly extended end, and being of less height than the standard. where y the inwardly extended end will engage the opposite side of the form, thereby to retain said side of the form and to space {my own, I have hereto afiixed my signature the abutment fr m s id ideywhe eby' the m the presence ozE-two Witnesses.

abutment may be tilted to grip the bar and whereby a prying tool may be insertec i be- WILLIAM FLRGUSON' tween said side of the form and the abut- Witnesses:

ment to loosen the abutment. J. W. FULLER,

In testimony that I claim the foregoing as H. P. SMITH. 

